Recent Fedora Core kernels (plus my SPEC file for 2.6.8-1.541 with Athlon support)

[James Wilkinson]

Bryan J. Smith wrote:
> 
> [ **BTW, I'm fully aware that the i686 kernel runs fairly optimized on
> Athlon.  But turning off the generic support, and optimizing for K7
> makes a significant difference for me in engineering applications. ]

Are you sure that your custom-compiled kernels still have 4G/4G mode
enabled? As choosing any other mode would give significant performance
enhancements in certain applications.

Regardless, it would probably be helpful if you could
 * check exactly what it was that helped (make sure that you only
   change the one parameter, and identify how much it's removing generic
   support, how much it's Athlon optimisation, and how much it's turning
   off 4G/4G).

 * benchmark it

 * if the performance improvements *are* significant, post it to the
   fedora-devel list and file a Request For Enhancement in bugzilla:
   the Fedora kernel crew can't help if they don't know there's a
   problem.

James.

-- 
E-mail address: james | In the Royal Air Force a landing's OK,
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                      | But in the Fleet Air Arm the outlook is grim,
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